Celebrity sex tapes are amateur or professionally-made recordings of sex acts, as performed by a celebrity and their partner. There may be more than two participants; both group sex and gang banging can be included. Dwarfs or midget pornography features performers who are dwarfs/midgets. Although pornography has usually focused on heterosexuality, due to the prevalence of the heterosexual orientation, explicit gay material has a long history as well, which reaches back to Greek antiquity, if not to prehistory. Each participant may engage in any type of sex acts with one or both of the others, such as vaginal, anal or oral sex or mutual masturbation. Generally, interest differs between people, and gender depends on sexual orientation. Pornographic films present sexual fantasies and usually include erotically stimulating material such as nudity. A homosexual threesome would involve either three men or three women. Even though the performers who perform in these films typically appear on many reality websites within a short span of time, most of these websites claim that each of them is an amateur. Reflective of its views on sexuality and culture, Japanese pornography delves into a wide spectrum of heterosexual, homosexual, and transgender sexual acts in addition to unique fetishes and philias. Depictions of male and female masturbation are common in pornography, including gay pornography. The anus has a relatively high concentration of nerve gay fuck endings and can be an erogenous zone, and the receiver may receive pleasure from external anal hentai sex stimulation. Voyeurism: Seeing another urinate without the person knowledge either through video taping by a hidden camera, or by lurking in locations where people are urinating or are likely to have an urge to urinate. Adult animation is genre of animation geared towards adults and sometimes teens. Pegging is a sexual practice in which a woman performs anal sex on a man by penetrating the man anus with a strap-on dildo. Another variant of reality pornography consists of normal couples that are filmed by momporn professionals, in which case the only obvious distinction from amateur pornography is the higher quality of production, filming and editing.